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Examples of Code Systems include ICD-9 CM, SNOMED CT, LOINC, and CPT. To meet the requirements of a Code System as defined by HL7, a given Concept Code must resolve to one and only one meaning within the Code System. ... Value Description Comment BE Bilateral Ears OU Bilateral Eyes BN Bilateral Nares BU Buttock CT Chest Tube LA Left Arm LAC ... ................
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